Cone-pulley head-stock



e. n. XSUNDSTRAIND.

CONE PULLEY HEAD'STOCK.

APPLICATION FILED Aue.2a. 1919.

13 7,55 9, v PatentedAug. 16,1921.

2 SHEETS-SHEET I.

a. 0. SUN'DSTRAND.

CONE PULLEY H EAD STOCK. APPLICATION FILED Aue.2s. 1919.

1 ,387,5 1 9. Patented Aug. 16, 1921.

. v 2 SHEETS-SHEET 2. 25 4 2 29 UNITED STATE-.5:

GUSTAF DAVID sUnns'rRANn, or ROCKFORD; ILLIQNVOIS, ASSIGNOR' 'ro nockronn TooL'oo rAnY, or Roc ronn ILLINOIS, A conronA'rIoN orTII LnvoIs,

CONE-PULLEY HEAD-STOCK; i

Specification of LettersilPatent; Ql at nt d ,:1 1

Application filed Au ust as, 1919. Serial No. 315308,

To all whom it may gonoern: 7

Be it known that I, GUsrAr DAV D SUND STRAND, acitizcn of the United States residing at Rockford, in the county of innebago and State of Illinois, have invented certain new and useful Improvements in Cone-Pulley Head-Stocks, of which the fol lowing is a specification. I

My invention relates to lathe head stocks and more specifically to an improved head stock embodying a belt' transmission 7 for driving the lathe spindle at various speeds.

One of the objects ofrmy invention is to' eliminate the overhead countershaft in general use in machineshops. These countershafts are expensivefto install, inaccessible for purposes of 'lubrication and repair, and

r the belts running down from them to the machines below are a source of danger for the workman as wellas filling thei'room with obstructions. I accomplish my object] by mounting two cone pulleys in the head stock.

itself to secure the desired" speed variations. Head stocks according to myinvention'are peculiarly, advantageous in connection with double bed lathes having two sets of ways, as theextra width of such-Ea machine will accommodate a wide head stocln In the accompanying'draw-ings, Figure 1 is an end view of a head stock. accordingto Vmy invention mounted on -a doiible bed with the main drive pulley-removed. Fig. 2 is a plan viewof the head stock, and Fig.3 is a side View of themaindrive pulley and i the supporting frame being shown in section. .7

A device according to'my invention comprises a main frame adapted to be suitably mounted on the lathebedand, to carry the main spindle of the lathe which h'as ia cone pulleyon it; and a cooperatingcone pulley" laterally offsetfrom the spindle and adapted to receive power and transmit it togthe spindle. 5

, Referring to the drawings, v10

the bed of a double bed lathe having two sets of ways, rear waysll and 12, andgfront ways only one of which appears in Fig. .1 at 13. The main toolcarriage indicated as a whole by the reference character 14 slides uponthe front ways; :My improved head,

stock is illustratedas mounted upon the rear ways 11' and 12, the main ,frame 15 thereof carrying suitable bolts 16 and a, clamping plate 17 adapted to engage, said ways." The PATENTjOFFI'CE,

main spindle 18 turns in suitable bearings i at 19 and 20' and carries a cone pulley 21.

The cooperating coii'epulley adapted to re ceive power is indicated at 22 and rotates in bearings 23'and 24 on an axis parallel to the splndle 18, the shaft of said cone pulley extending beyond the bearing 24to carry a power receiving pulley 25.

The belt 26 transmitting power" between the two' cone pulleys is so short that it will stretch very little, and if it were kept tight enough to transmit power at all times, it would be almost impossible to shift it. I have provided means for loosening the belt to shift it and for maintaining it properly tight for the 2 times. The bearings 23 and 24 are formed 28, respectively, at the ends of an auxiliary frame 29 carrying the'powerireceiving pulley 25 and cone 22, said frame being pivoted transmission of power at all 'in upwardly projecting end portions 27 and y pivoted on a longitudinal axis on lugs 34.

extending up from the bearing 20 for the main spindle. Similar lugs 35 on the bear: ing 24 carry a nut 36 also pivoted on a longitudinal axis and through which the threaded .end ofthe thrust rod 32 p asses.; The thrust rod carriesia suitable handle for. rotating ferent pulleys;

it to tighten? the beltfo r transmitting power I have illustrated a clutch lever 38 adapted to rotate a shaft 39 in lugs 40 extending diagonally from the pivoted frame 29. A cen tral sleeve 41'. rotates with the shaft v39 and -carries projecting fingers 42 equipped with rollersT48 to engage in the groove 44 of the sleeve 45 which operatesv the clutch 46. The i power receiving pulley, clutch, clutch member, casting 29 andrcone 22 allrotate as a unit through small angles to tighten or loosen the belt .26 and are actuated by the thrust rod 32. 'It willbe' obvious that anysuitable power means maybe usedto rotate the cone 22 in place of the receiving pulley 2 5, such, for instance, as anelectri'c motor.

While I have shown and described in de- I tail aspecificembodiment of my invention,

itfshould be clearly understoodthat the descriptionis for purposes.ofillustration only, I

that head stocks according to my invention can be .mounted on any type of lathe and driven by any suitable power means, and that many variations and modifications of the head stock itself will naturally occur to those skilled in the art. I aim in the subjoined claims to cover all such legitimate modifications and variations.

I claim as my invention:

1., A lathe having, in combination, a bed, spaced wa s on said bed, a head stock on said ways, a lathe spindle carried by said headstock and located approximately vertically over one of said ways, a countershaft carried by said headstock andlocated approximately vertically over the other way, cone pulleys carried by said spindle and countershaft, means for varying the distance between said spindle and countershaft by moving the shaft, and power-receiving means carried by the shaft.

2. A lathe having, in combination, a bed, a head stock on said bed, a lathe spindle and a'countershaft carried by said headstock, cone pulleys carried by said spindle and countershaft, means for varying the distance between said spindle and countershaft by moving the shaft, and power-receiving means carried by the shaft.- I

8. A lathe having, in combination, a bed, a headstock on said bed, a lathe spindle and a countershaft carried by said headstock, cone pulleys carried by said spindle and countershaft, and means for varying the distance between saidspindle and countershaft.

A'A lathe having, in combination, a bed,

spaced ways on said bed, a headstock on said ways, a lathe spindle carried by said headstock and located approximately vertically over one of said ways, a countershaft carried by said headstock and located approximately vertically over the other way, cone pulleys carried by said spindle and countershaft, and means for varying the distance between said spindle and countershaft by moving the shaft. I V

5. A lathe having, in combination, a bed, a headstock onsaid bed, a main spindle in said headstock, a cone pulley on said main spindle, a countershaft and a coiiperating cone pulley on said countershaft, and means for delivering power to said countershaft from a suitable source. i

6. A lathe having, in combination, a bed, a head-stock on said bed,a U-shapedframe pivoted on said headstock along an axis adjacent its bight and having upwardly exin'g arms, bearings in said upwardly extending arms, a shaft in said bearings, and a cone pulley on said shaft.

7. A lathe having, in combination, ,a bed,

a headstock on said bed, a U-shaped frame pivoted on said headstock alongan axis ad-. jacent its bight and having upwardly extending arms, hearings in said upwardlyexa headstock on said bed, a U-shaped frame pivoted on said headstock along an axis adjacent its bight and having upwardly extending arms, bearings in said upwardly ex tending arms,'a shaft in sa1dbear1ngs,a

cone pulley on said shaft, power-receiving means carried by said shaft, a clutch on said shaft, and a clutch lever carried by said U- shaped frame for connecting said powerreceiving means and said shaft.

9. A lathe having, in combination, a bed, a headstock on said bed, a U-shaped frame pivoted on said headstock along an axis adtjacent its bight and'having upwardly extending arms, hearings in said upwardly extending arms, a shaft in said bearings, a cone pulley on said shaft, and power-receiving means carried by said shaft, diagonally extending apertured lugs adjacent one of said bearings, a clutch shaft supported by said lugs in a plane perpendicular to said shaft, a clutch sleeve on said main shaft, and fingers carried by said clutch shaft adapted to engage said sleeve. i

10. A lathe having, in combination, a bed, a head stock on said bed, said head stock comprising a main frame, a spindle journaled in saidmain frame, a cone pulley on.

said spindle, a countershaft' journaled for rotation about an axis parallel to said spindie, a cooperating cone pulley on said countershaft, and means for moving said countel-shaft and cooperating cone pulley toward and away from saidspindle.

11. A lathe having, in combination, a bed, a head stock on said bed, said head stock comprising a mainframe, a spindle journaled in said main frame,a cone pulley on said spindle, a pivoted auxiliary frame carrying' a countershaft, a cone pulley on said countershaft, and means for rocking said auxiliary frame.

12.. A lathehaving, in combination, a bed,

a head stock on said bed, said head stock comprising a. main frame, a spindle journaled in said frame, a countershaft, power means for rotating said countershaft, a clutch and clutch lever carried by said coun tershaft, cooperating pulley means on said countershaft and said spindlefor the transmission'of power, and means for moving saidv countershaft and the associated clutch, clutch lever, and pulley means bodily toward and away from said spindle.

13. A lathe having, in combination, abed, a head stock on said bed, said head stock having, in combination, two coiiperating cone pulleys and'means for varyingthe distance between the axes of rotatio pulleys. a

14 A lathe having, in combination, a bed,

11 of said a head stock on said bed, said head stock having, in combination, three elements pivoted on parallel triangularly spacedaxes, one of said elements being carried by another of said elements whereby rotation of said last-mentioned element around its pivotal axis will vary the distance between the axes of the other two elements.

15. A lathe having, in combination, a bed, a head stock on said bed, said head stock having, in combination, a stationary frame, and a pivoted frame, cooperating cone pulleys journaled in said frames, and means in the nature of a thrust rod extending between said frames for varying the distance between said cone pulleys.

16. A lathe having, in combination, a bed, i a head stock on said bed,-said headstock having, in combination, a staionary frame, a rotatable spindle in said frame, a second frame pivoted on said stationary frame, a rotatable spindle in said second frame, cooperating cone pulleys on said spindles, a thrust rod rotatably but not slidably -1nounted on one of said frames, and means in the nature of a screw-threaded nut on theother frame adapted to engage said thrust rod to be operated thereby.

l7. Alathe having, in combination, a bed, a head stock on said bed, said head stock having, in combination, a stationary frame,

a spindle j ournaled in said stationary frame, a cone pulley on said spindle, a second frame pivoted on said stationary frame, a spindle journaled in saidsecond frame, a cone pulley on said spindle and a clutch on said spindle adapted to connect said cone pulley to a suitable source of power.

18. A lathe having, in combination, a bed, a. head stock on said bed, said head stock having, in combination, cooperating cone pulleys rotating on parallel spaced axes and a clutch adapted to connect one of said cone pulleys to a suitable source of power.

a head stock on said bed, said head stock having, in combination, spindles rotating on parallel axes, means on one of said spindles adapted to receive power from a suitable source, a belt transmission between said the other of said sleeve members.

spindles,.and means for moving one of said spindles toward and away from the other of said spindles. I

20. A head stock having, in combination,

a stationary frame, a spindle journaled in said stationary frame, a cone pulley on said spindle, a second frame pivoted to said statlonary frame, a spindle ournaled 1n sa1d second frame, means on sald second splndle for receiving power and transmitting it to spindle, and a clutch for connecting saidpower receiving means and said cone pulley,

means for moving said power receiving 7 'means, clutch, cone pulley, and second-mentioned spindle bodily as a unit toward and away from said first-mentioned spindle, and

a cone pulley on said first mentioned spindle. T I r I 22. A lathe having, in combination, a bed,

a headstock on said bed, said head stock having, in combinatioma stationary frame having a laterally extending portion, an

. upwardly extending frame pivoted on said laterally extending portion, spindles jour- ..naled on parallel axes in said stationary frame andin said pivoted frame respectlvely, cone pulleys on said spindles, sleeve-.

likev members carried by said stationaryframe and said pivoted frame respectively,

and a thrust rod having rotatable but not slidable connection with one of said sleeve members, and a screw-thread connectiont 23. A lathe having, in combination, a bed, i

a head stock on said bed, said head stock having, n combination, a U-shaped' frame pivoted along an axis adjacent its bight and having upwardly extending arms, bearings 'in said upwardly extending arms, a spindle 19. A lathe having, in combination, abed,

in said bearings and a cone pulley on'said spindle.

[In testimony whereof, I have hereunto set'my hand. 

